netdev - Re: [PATCH] xdp: use common helper for netlink extended ack reporting

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Message-ID: <20170502155211.770dde0b@cakuba.netronome.com>
Date:   Tue, 2 May 2017 15:52:11 -0700
From:   Jakub Kicinski <jakub.kicinski@...ronome.com>
To:     Daniel Borkmann <daniel@...earbox.net>
Cc:     davem@...emloft.net, alexei.starovoitov@...il.com,
        netdev@...r.kernel.org
Subject: Re: [PATCH] xdp: use common helper for netlink extended ack
 reporting

On Wed,  3 May 2017 00:39:17 +0200, Daniel Borkmann wrote:
> Small follow-up to d74a32acd59a ("xdp: use netlink extended ACK reporting")
> in order to let drivers all use the same NL_SET_ERR_MSG_MOD() helper macro
> for reporting. This also ensures that we consistently add the driver's
> prefix for dumping the report in user space to indicate that the error
> message is driver specific and not coming from core code. Furthermore,
> NL_SET_ERR_MSG_MOD() now reuses NL_SET_ERR_MSG() and thus makes all macros
> check the pointer as suggested.
> 
> References: https://www.spinics.net/lists/netdev/msg433267.html
> Signed-off-by: Daniel Borkmann <daniel@...earbox.net>

Acked-by: Jakub Kicinski <jakub.kicinski@...ronome.com>

Perhaps I was overthinking loosing the message if extack is NULL.  
I certainly like how this patch simplifies things :)